What is the conventional purpose of Linux UIDs that are lower than 100?
They are reserved for super user accounts.
They are reserved for the system admin accounts.
They are reserved for system accounts.
They are unused, aside from 0, because they are targets of exploits.
They are used to match with GIDs in grouping users.
Which of the following can the chage command NOT change?
The number of days since January 1, 1970 after which the user's account will no longer be accessible.
The number of days since January 1, 1970 after which the password can change.
The number of days since January 1, 1970 since the password was last changed.
The maximum number of days during which a password is valid.
The number of days of inactivity after a password has expired before the account is locked.
Which command allows you to make a shell variable visible to subshells?
export $VARIABLE
export VARIABLE
set $VARIABLE
set VARIABLE
env VARIABLE
What is the purpose of the file /etc/profile?
It contains the welcome message that is displayed after login.
It contains security profiles defining which users are allowed to log in.
It contains environment variables that are set when a user logs in.
It contains default application profiles for users that run an application for the first time.